Beginning in the 1940s, the U.S. Geological Survey’s National Mapping Program was tasked with the immense cartographical feat of surveying the entire country to create a series of more than 50,000 ...

WASHINGTON DC — Hikers, hunters and other outdoor recreationists will be pleased to know that free digital topographic maps are now available online from the U.S. Geological Survey.

No audio available for this content. This graphic represents the planned US Topo map production schedule for the next three- year revision cycle. The US Topo project repackages data from national GIS ...

Maps help us find, discover, and reach new places. Although the field of geography is focused on locations, it is also a ...

In the second half of the 20th century, the foundation of the U.S. Geological Survey’s national map series was the handcrafted 7.5-minute topographic map. Times change, budgets get squeezed and ...

For outdoor lovers, no map is more iconic – or useful – than a USGS topo map. While the concentric, sepia lassos of elevation are the maps’ visual signature, their real power is the cross-referenced ...